21016157202070 has 16 divisors (see below), whose sum is σ = 37829235768480. Its totient is φ = 8406428924224.

The previous prime is 21016157201987. The next prime is 21016157202121. The reversal of 21016157202070 is 7020275161012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564567 + ... + 6669346.

It is an arithmetic number, because the mean of its divisors is an integer number (2364327235530).

Almost surely, 2^{21016157202070} is an apocalyptic number.

21016157202070 is a deficient number, since it is larger than the sum of its proper divisors (16813078566410).

21016157202070 is a wasteful number, since it uses less digits than its factorization.

21016157202070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489159.

The product of its (nonzero) digits is 11760, while the sum is 34.

The spelling of 21016157202070 in words is "twenty-one trillion, sixteen billion, one hundred fifty-seven million, two hundred two thousand, seventy".